How long does it take to fly to Islip, New York?

The flight from Colorado to Islip, New York depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Denver (a popular airport in Colorado) to New York John F Kennedy Intl Airport (the most popular airport in Islip, New York), then the flight time is 3h 32m on average. If you fly from Colorado Springs (another popular airport in Colorado) to New York John F Kennedy Intl Airport, then the average flight time is 6h 37m.

What airlines fly to Islip, New York?

United Airlines, Delta and Frontier are the top three most popular airlines that fly to Islip, New York from Colorado according to our data. United Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 6 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Colorado to Islip Long Island?

Frontier is the most popular carrier operating from Colorado to Islip Long Island

When did momondo last update prices for flights from Colorado to Islip Long Island Airport?

Prices for flights from Colorado to Islip Long Island Airport are updated daily.

How many operators does momondo search for flights from Colorado to Islip Long Island Airport?

There is 1 operator available for flights from Colorado to Islip Long Island Airport as of November 2025.

How old do you have to be to fly from Colorado to Islip Long Island Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The necessary travel and health documents for your Islip Long Island Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$65 Cheap Flights from Colorado to Islip in 2025/26

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11:59 pm - 9:13 amDEN-ISP

7h 14m1 stop

6:00 am - 11:04 pmISP-DEN

19h 04m1 stop

$130Frontier

Find Deal

Wed, Dec 3 - Wed, Dec 10

6:31 pm - 9:13 amDEN-ISP

12h 42m1 stop

10:19 am - 11:04 pmISP-DEN

14h 45m1 stop

$134Frontier

Find Deal

Fri, Dec 5 - Mon, Dec 8

12:59 am - 11:59 pmDEN-ISP

21h 00m1 stop

10:19 am - 11:04 pmISP-DEN

14h 45m1 stop

$137Frontier

Find Deal

Mon, Nov 24 - Mon, Dec 8

11:59 pm - 9:13 amDEN-ISP

7h 14m1 stop

11:15 am - 8:24 amISP-DEN

23h 09m1 stop

$138Frontier

Find Deal

Wed, Dec 3 - Sun, Dec 7

7:00 am - 3:10 pmDEN-ISP

30h 10m1 stop

6:00 am - 9:10 amISP-DEN

29h 10m1 stop

$142Frontier

Find Deal

Fri, Dec 12 - Mon, Dec 15

12:59 am - 11:59 pmDEN-ISP

21h 00m1 stop

8:29 pm - 11:04 pmISP-DEN

28h 35m1 stop

$144Frontier

Find Deal

Mon, Nov 24 - Tue, Dec 2

9:19 am - 10:37 amDEN-ISP

23h 18m1 stop

6:00 am - 12:41 amISP-DEN

20h 41m1 stop

$145Frontier

Find Deal

Thu, Nov 20 - Sat, Nov 22

6:31 pm - 9:13 amDEN-ISP

12h 42m1 stop

12:07 pm - 3:43 pmISP-DEN

29h 36m1 stop

$146Frontier

Find Deal

Fri, Dec 12 - Sun, Dec 14

5:05 am - 5:15 pmDEN-ISP

10h 10m1 stop

5:30 am - 10:35 amISP-DEN

7h 05m1 stop

$492Southwest

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Sun, Dec 28 - Sat, Jan 3

1:10 pm - 11:55 pmDEN-ISP

8h 45m2 stops

5:30 am - 1:05 pmISP-DEN

9h 35m2 stops

$533Southwest

Find Deal

Sun, Dec 28 - Sat, Jan 3

Frontier flights from Colorado to Islip, New York

Our best Frontier deals on Colorado to Islip, New York flight tickets

Frontier

Dec 3

DEN11:59 pmDenver Intl

7h 14m

1 stop

ISP9:13 amIslip Long Island

Dec 10

ISP6:00 amIslip Long Island

19h 04m

1 stop

DEN11:04 pmDenver Intl

$130

Find similar

Frontier

Dec 5

DEN6:31 pmDenver Intl

12h 42m

1 stop

ISP9:13 amIslip Long Island

Dec 8

ISP10:19 amIslip Long Island

14h 45m

1 stop

DEN11:04 pmDenver Intl

$134

Find similar

Frontier

Nov 20

DEN9:19 amDenver Intl

23h 18m

1 stop

ISP10:37 amIslip Long Island

Nov 23

ISP6:00 amIslip Long Island

20h 41m

1 stop

DEN12:41 amDenver Intl

$137

Find similar

Southwest flights from Colorado to Islip, New York

Our best Southwest deals on Colorado to Islip, New York flight tickets

Southwest

Dec 28

DEN5:05 amDenver Intl

10h 10m

1 stop

ISP5:15 pmIslip Long Island

Jan 3

ISP5:30 amIslip Long Island

7h 05m

1 stop

DEN10:35 amDenver Intl

$492

Find similar

Southwest

Dec 28

DEN1:10 pmDenver Intl

8h 45m

2 stops

ISP11:55 pmIslip Long Island

Jan 3

ISP5:30 amIslip Long Island

9h 35m

2 stops

DEN1:05 pmDenver Intl

$533

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 12/3

11:59 pm-9:13 am

1 stop7h 14m

Islip Long Island

Wed 12/10

6:00 am-11:04 pm

1 stop19h 04m

$130

DenverIslip

DEN - ISP

DENISP

Denver Intl

Fri 12/5

6:31 pm-9:13 am

1 stop12h 42m

Islip Long Island

Mon 12/8

10:19 am-11:04 pm

1 stop14h 45m

$134

DenverIslip

DEN - ISP

DENISP

Denver Intl

Mon 11/24

12:59 am-11:59 pm

1 stop21h 00m

Islip Long Island

Mon 12/8

10:19 am-11:04 pm

1 stop14h 45m

$137

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 12/3

11:59 pm-9:13 am

1 stop7h 14m

Islip Long Island

Sun 12/7

11:15 am-8:24 am

1 stop23h 09m

$138

DenverIslip

DEN - ISP

DENISP

Denver Intl

Fri 12/12

7:00 am-3:10 pm

1 stop30h 10m

Islip Long Island

Mon 12/15

6:00 am-9:10 am

1 stop29h 10m

$142

DenverIslip

DEN - ISP

DENISP

Denver Intl

Mon 11/24

12:59 am-11:59 pm

1 stop21h 00m

Islip Long Island

Tue 12/2

8:29 pm-11:04 pm

1 stop28h 35m

$144

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 11/20

9:19 am-10:37 am

1 stop23h 18m

Islip Long Island

Sat 11/22

6:00 am-12:41 am

1 stop20h 41m

$145

DenverIslip

DEN - ISP

DENISP

Denver Intl

Fri 12/12

6:31 pm-9:13 am

1 stop12h 42m

Islip Long Island

Sun 12/14

12:07 pm-3:43 pm

1 stop29h 36m

$146

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sun 12/28

5:05 am-5:15 pm

1 stop10h 10m

Islip Long Island

Sat 1/3

5:30 am-10:35 am

1 stop7h 05m

$492

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sun 12/28

1:10 pm-11:55 pm

2 stops8h 45m

Islip Long Island

Sat 1/3

5:30 am-1:05 pm

2 stops9h 35m

$533

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How to get the cheapest flight ticket from Colorado to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Colorado to Islip, New York is on a Thursday. Travelers who choose to depart for Islip, New York on a Thursday will often find tickets for as low as $286. The most expensive day to fly to Islip, New York is Wednesday, with ticket prices averaging around $426.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Colorado in the evening is the least expensive time of day to depart. momondo users have found prices as low as $266 when looking at flights departing in the evening. Flights to Islip, New York are more costly in the morning, with an average ticket price of $363. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Colorado to Islip, New York flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Islip, New York

Direct flights	None

There are no direct flights from Colorado to Islip, New York. There are no popular flight routes from Colorado to Islip, New York.

Search flight deals

When did momondo last update prices for flights from Colorado to Islip Long Island Airport?
Prices for flights from Colorado to Islip Long Island Airport are updated daily.
How many operators does momondo search for flights from Colorado to Islip Long Island Airport?
There is 1 operator available for flights from Colorado to Islip Long Island Airport as of November 2025.
How old do you have to be to fly from Colorado to Islip Long Island Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The necessary travel and health documents for your Islip Long Island Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to Islip, New York

Compare and see reviews for airlines that fly from Colorado to Islip, New York with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $357	Free Cancellation	Rating 8.0 4,241 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

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Why should I use momondo to find a flight deal from Colorado to Islip?

It is quick and easy to find Colorado to Islip flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Islip that suits you.

Can I find flights from Colorado to Islip with flexible booking policies on momondo?

momondo does allow users to show only those flights to Islip from Colorado which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Colorado to Islip?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Islip from Colorado.

I’m not ready to book a flight from Colorado to Islip right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Islip now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Islip and let you know when they change.

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Cheap flights from Colorado to New York from $65

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to New York departing on 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Colorado to Islip, New York

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How to get the cheapest flight ticket from Colorado to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Colorado to Islip, New York is on a Thursday. Travelers who choose to depart for Islip, New York on a Thursday will often find tickets for as low as $286. The most expensive day to fly to Islip, New York is Wednesday, with ticket prices averaging around $426.

What is the cheapest time of day to depart on your flight to Islip, New York?

What is the cheapest airline that flies from Colorado to Islip Long Island?

Frontier is the most popular carrier operating from Colorado to Islip Long Island

What airlines fly to Islip, New York?

How long does it take to fly to Islip, New York?

Cheap Colorado to Islip, New York flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Islip, New York

Direct flights

When did momondo last update prices for flights from Colorado to Islip Long Island Airport?

How many operators does momondo search for flights from Colorado to Islip Long Island Airport?

How old do you have to be to fly from Colorado to Islip Long Island Airport?

What documentation or ID do you need to fly to Islip Long Island Airport?

Best airlines flying from Colorado to Islip, New York

Compare and see reviews for airlines that fly from Colorado to Islip, New York with momondo

Traveling to a place near New York?

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Islip?

Can I find flights from Colorado to Islip with flexible booking policies on momondo?

How can momondo help me find flights from Colorado to Islip?

I’m not ready to book a flight from Colorado to Islip right now. Can momondo alert me if prices change?

An easier way to manage your Islip, New York trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing New York